tekmar 260 Installation guide

tekmar
Brand
tekmar
Model
260
Category
Weather stations
Type
Installation guide

This manual is also suitable for

- Data Brochure
Boiler Control 260
D 260
03/09
The Boiler Control 260 is designed to control a single stage heat source in order to provide outdoor reset or Domestic Hot Water (DHW)
operation. The control has a Liquid Crystal Display (LCD) to view system status and operating information.
Additional functions include:
• Quick Setup for easy installation and programming of control
• User comfort adjustment to increase or decrease building space
temperature
• Advanced settings to fine-tune building requirements
• Pump and valve exercising
• Optional indoor sensor for room air temperature control
• Powered boiler pump output
• DHW pump or valve operation
• Optional DHW priority
• Test sequence to ensure proper component operation
• Setback input for energy savings
• 120 V (ac) power supply
• CSA C US certified (approved to applicable UL standards)
Output
Boiler
Input
Universal
Sensor
Included
Input
Outdoor
Sensor
Included
Output
Boiler System
Pump
Input
120 V (ac) Power
Supply
Input
Boiler Demand
Signal
Input
tekmar Timer
Optional
Input
Indoor Sensor
Optional
To increase or decrease the
building temperature:
Boiler Control 260
One Stage Boiler & DHW
Boiler Demand
C US
Made in Canada by
tekmar Control Systems Ltd.
tektra 910-01
Power:
Relays:
Demand:
120V + 10% 50/60 Hz 1300 VA
240V (ac) 10 A 1/3 hp
20 to 260 V (ac) 2 VA
Signal wiring must be
rated at least 300V.
H1154D
BOIL
°
F
VIEW
Test
13 14 15 16 17
Do not apply power
UnO
Sw
Com
Boil
Out
Com
11 12
Boiler
1
2345 6
7 8
Boiler
Demand
L
Power
N
Boil
P1
N
DHW
Demand
Display defaults back to
VIEW
menu after 20 sec.
ROOM
- Set to desired room temp.
OUTDR DSGN
- Set to coldest (design)
outdoor temp.
Installer Instructions
Terminal Unit Set to
High Mass Radiant
Low Mass Radiant
Fan Coil
Convector
Radiator
Baseboard
1
2
3
4
5
6
Refer to brochure for more information
910
DHW
Pmp/Vlv
1
8
Indr
Terminal Unit
Fire Delay DHW Demand
Return
Off
Installer
Advanced
DHW during UnOcc
DHW Pump
Off
DHW Priority
DHW Valve
Item
Press the
Item
,, buttons
simultaneously for 1 sec. to
enter the
ADJUST
menu
Use the , buttons to
adjust the
ROOM
setting
Input
DHW Demand
Signal
M
Output
DHW Pump OR
DHW Valve
OCC
Copyright © D 260 - 03/091 of 20
Meets Class B:
Canadian ICES
FCC Part 15
Date Code
Note:
Boiler or DHW demand
must be powered with 20 to
260 V (ac) before the boiler
is able to fire.
Copyright © D 260 - 03/09 2 of 20
How To Use The Data Brochure
This brochure is organized into four main sections. They are: 1)
Sequence of Operation
, 2)
Installation
, 3)
Control Settings
, and 4)
Troubleshooting
. The
Sequence of Operation
section has three sub-sections. We recommend reading Section A:
General Operation
of the
Sequence of Operation
, as this contains important information on the overall operation of the control. Then read the sub-
sections that apply to your installation. For quick installation and setup of the control, refer to the
Installation
section,
DIP Switch
Settings
section, followed by the
Quick Setup
section.
The
Control Settings
section (starting at
DIP Switch Settings
) of this brochure, describes the various items that are adjusted and
displayed by the control. The control functions of each adjustable item are described in the
Sequence of Operation
.
Table of Contents
Reference Material: Essay E 003 “Characterized Heating Curve and Reset Ratio”
User Interface
The 260 uses a Liquid Crystal Display (LCD) as the method of supplying information. You use the LCD in order to set up and monitor
the operation of your system. The 260 has three push buttons (
Item
, , ) for selecting, viewing, and adjusting settings. As you program
your control, record your settings in the ADJUST menu table which is found in the second half of this brochure.
Item
The abbreviated name of the selected item will be displayed in the item field of the display.
To view the next available item, press and release the
Item
button. Once you have
reached the last available item, pressing and releasing the
Item
button will return the
display to the first item.
Adjust
To make an adjustment to a setting in the control, press and hold simultaneously for 1
second, all three buttons. The display will then show the word ADJUST in the top right
corner. Then select the desired item using the
Item
button. Finally, use the
button to make the adjustment.
To exit the ADJUST menu, either select the ESC item and press the or button, or leave the adjustment buttons alone for 20 seconds.
When the
Item
button is pressed and held in the VIEW menu, the display scrolls through all the adjust items in both access levels.
Additional information can be gained by observing the status field and pointers of the LCD. The status field will indicate which of the
control’s outputs are currently active. Most symbols in the status field are only visible when the VIEW menu is selected.
User Interface ................................................... pg 2
Description of Display Elements .................... pg 3
Sequence of Operation .................................... pg 4
Section A: General Operation ..............
pg 4
Section B: Boiler Reset
......................... pg 5
Section C: DHW
..................................... pg 8
Installation ...................................................... pg 10
DIP Switch Settings ....................................... pg 14
Quick Setup ........................................................ pg 14
Control Settings ................................................. pg 15
View Menu
................................................ pg 15
Adjust Menu
............................................. pg 16
Testing and Troubleshooting ............................ pg 17
Error Messages
....................................... pg 19
Technical Data .................................................... pg 20
Limited Warranty ................................................ pg 20
Item
Item
and / or
Copyright © D 260 - 03/093 of 20
Display
Boiler DemandTerminal Unit
DHW Demand
VIEW
ADJUST
TARGET
INDR
DSGN
BOIL
OUTDR
ROOM WWSD
MAXMIN
OCC
UN
DIFF
DHW
min
°
F
°
C
Item
Number Field
Displays the current
value of the selected
item
{
Buttons
Selects Menus, Items and
adjusts settings
Menu Field
Displays the
current menu
Status Field
Displays the current
status of the control’s
inputs, outputs and
operation
Item Field
Displays an
abbreviated name of
the selected item
Fire Delay
Symbol Description
Pump
Displays when the boiler pump is in operation.
DHW
Displays when the DHW pump or valve is in
operation.
°
F,
°
C
°F, °C
Displays the units of measure that all of the
temperatures are to be displayed in the control.
OCC
Occupied Schedule
Displays when the control is in occupied (Day)
mode.
UNOCC
Unoccupied Schedule
Displays when the control is in unoccupied
(Night) mode.
Pointer
Displays the control operation as indicated by
the text.
Burner
Displays when the boiler relay is turned on.
DHW
Copyright © D 260 - 03/09 4 of 20
Sequence of Operation
Section A
General Operation
Page 4
Section B
Boiler Reset
Page 5-8
Section C
DHW
Page 8-10
Section A —General Operation
POWERING UP THE CONTROL
When the Boiler Control 260 is powered up, the control displays the control type number in the LCD for 2 seconds. Next, the software
version is displayed for 2 seconds. Finally, the control enters into the normal operating mode and the LCD defaults to displaying the
current outdoor air temperature.
OPERATION
The 260 operates a single on / off heat source to control the supply
water temperature to a hydronic system. The supply water temperature
is based on either the current outdoor temperature, or on a DHW target.
Outdoor Reset
The 260 calculates a supply temperature based on the outdoor air
temperature. The 260 uses a
Characterized Heating Curve
and op-
tionally indoor temperature feedback from an indoor sensor in this
calculation.
DHW Control
When a demand signal from a Domestic Hot Water (DHW) system is
present, the control will operate the boiler to maintain the supply wa-
ter temperature at 180°F (82°C). Refer to section C.
EXERCISING
The 260 has a built-in exercising function. If a pump or valve that is connected to the control has not been operated at least once every
3 days, the control turns on the output for 10 seconds. This minimizes the possibility of a pump or valve seizing during a long period
of inactivity. While the control is exercising, the
Test
LED flashes.
Note
: The exercising function does not work if power to the control, valves, or pumps is disconnected.
SETBACK (UNOCCUPIED)
To provide greater energy savings, the 260 has a setback capability. With setback, the
supply water temperature in the system is reduced when the building is unoccupied. By
reducing the supply water temperature, air temperature in the space may be reduced
even when thermostat’s are not turned down. Any time the
UnO Sw
(13) and the
Com
(14)
terminals are shorted together, the control operates in the unoccupied (Night) mode. When
in the unoccupied (Night) mode, the UNOCC segment is displayed in the LCD. The 260
adjusts the supply water temperature based on the UNOCC settings made in the control.
FACTORY DEFAULTS
The control comes preset with several factory defaults. These defaults are based on the terminal unit selection (see section B2). To fine-
tune building requirements, these defaults may be changed. If a factory default value for a terminal unit is changed, the terminal unit
number will flash when selected in the ADJUST menu.
To reload the factory defaults listed in section B2, power down the control and wait for 10 seconds. Power up the control while
simultaneously holding the
Item
and
buttons. The terminal unit number should now be displayed constantly in the LCD rather
than flashing.
Outdoor Design
Increasing Water Temperature
Design Supply
Decreasing Outdoor Temperature
Terminal Unit
Indoor Design
13
14
Timer Switch
UnO
Sw
Com
Copyright © D 260 - 03/095 of 20
Section B: Boiler Reset
Section B1: General
BOILER DEMAND
A boiler demand is required in order for the 260 to provide heat to the heating system. A
boiler demand is generated by applying a voltage between 24 and 240 V (ac) across the
Boiler Demand
terminals (1 and 2). Once voltage is applied, the
Boiler Demand
pointer is
displayed in the LCD. If the 260 is not in WWSD, the 260 closes the
Boil P1
contact. The
260 calculates a BOIL TARGET supply temperature based on the outdoor air temperature
and settings. The 260 then fires the boiler, if required, to maintain the target supply
temperature.
BOILER PUMP OPERATION (
Boil P1
)
The boiler pump contact (
Boil P1
, terminal 7) closes whenever there is a boiler demand and the 260 is not in WWSD. The boiler pump
segment is displayed in the LCD. After the boiler demand has been satisfied, the 260 continues to operate the boiler pump for 20
seconds. This allows some residual heat to be purged out to the heating system. During WWSD, the boiler pump is operated based
on the exercise function. For boiler pump contact operation during DHW operation, refer to section C.
BOILER OPERATION
When the 260 determines that boiler operation is required, the
Boiler
contact (11 and 12) closes. While the
Boiler
contact is closed, the
burner segment in the LCD is displayed.
INDOOR SENSOR
The indoor sensor is connected to the
Com
and
Indr
terminals (17 and 18). In addition, power must be applied to the
Boiler Demand
terminals (1 and 2) as described in the BOILER DEMAND section. With the indoor sensor connected, the 260 is able to sense the
actual room temperature. Indoor temperature feedback fine-tunes the supply water temperature in the heating system to maintain
room temperature. To adjust the room temperature, use the ROOM OCC or ROOM UNOCC setting in the ADJUST menu at the control.
If a multiple zone system is used with an indoor sensor, proper placement of the indoor sensor is essential. The indoor sensor should
be located in an area which best represents the average air temperature of the zones.
CHARACTERIZED HEATING CURVE
The 260 varies the supply water temperature based on the outdoor air temperature. The control takes into account the type of terminal
unit that the system is using. Since different types of terminal units transfer heat to a space using different proportions of radiation,
convection and conduction, the supply water temperature must be controlled differently. Once the control is told what type of terminal
unit is used, the control varies the supply water temperature according to the type of terminal unit. This improves the control of the air
temperature in the building.
BOILER TARGET TEMPERATURE (BOIL TARGET)
The BOIL TARGET temperature is determined from the
Characterized Heating Curve
settings, outdoor air temperature, and optionally,
indoor air temperature. The control displays the temperature that it is currently trying to maintain as the boiler supply temperature. If
the control does not presently have a requirement for heat, it does not show a boiler target temperature. Instead, “- - -” is displayed in
the LCD.
Section B1
General
Section B2
Installer
Section B3
Advanced
1
2
Boiler
Demand
24 to 240 V (ac)
Copyright © D 260 - 03/09 6 of 20
Section B2: Installer
OUTDOOR DESIGN (OUTDR DSGN)
The OUTDR DSGN is the outdoor air temperature that is the typical
coldest temperature of the year where the building is located. This tem-
perature is used when doing the heat loss calculations for the building.
If a cold outdoor design temperature is selected, the boiler supply tem-
perature rises gradually as the outdoor temperature drops. If a warm
outdoor design temperature is selected, the boiler supply temperature
rises rapidly as the outdoor temperature drops.
ROOM OCC & UNOCC (ROOM)
The ROOM is the desired room temperature for the boiler zones, and it
provides a parallel shift of the
Characterized Heating Curve
. The room
temperature desired by the occupants is often different from the design
indoor temperature (BOIL INDR). If the room temperature is not correct,
adjusting the ROOM setting increases or decreases the amount of heat
available to the building. A ROOM setting is available for both the occu-
pied (Day) and unoccupied (Night) modes.
TERMINAL UNITS
When using a
Characterized Heating Curve
, the control requires the selection of a terminal unit. The terminal unit determines the
shape of the
Characterized Heating Curve
according to how the terminal unit delivers heat into the building space (refer to Essay
E 003). The 260 provides for selection between six different terminal unit types: two types of radiant floor heat, fancoil, fin-tube
convector, radiator and baseboard. When a terminal unit is selected, the control automatically loads the design supply temperature
(BOIL DSGN), maximum supply temperature (BOIL MAX), and minimum supply temperature (BOIL MIN). The factory defaults are
listed below. To change defaults, refer to section B3. If a default has been changed, refer to section A to reload the factory defaults.
High Mass Radiant (1)
This type of a hydronic radiant floor is embedded in either a thick concrete or gypsum
pour. This heating system has a large thermal mass and is slow acting.
Default values: BOIL DSGN = 120°F (49°C), BOIL MAX = 140°F (60°C), BOIL MIN = OFF
Low Mass Radiant (2)
This type of radiant heating system is either attached to the bottom of a wood sub-floor,
suspended in the joist space, or sandwiched between the sub-floor and the surface.
This type of radiant system has a relatively low thermal mass and responds faster than
a high mass system.
Default values: BOIL DSGN = 140°F (60°C), BOIL MAX = 160°F (71°C), BOIL MIN = OFF
150°F (66°C)
170°F (77°C)
140°F (60°C)
BOIL DSGN
BOIL MAX
BOIL MIN
Terminal Unit
190°F (88°C)
210°F (99°C)
140°F(60°C)
High Mass Radiant
(1)
120°F (49°C)
140°F (60°C)
OFF
Low Mass Radiant
(2)
Fancoil
(3)
140°F (60°C)
160°F (71°C)
OFF
Fin-tube Convector
(4)
180°F (82°C)
200°F (93°C)
140°F (60°C)
Radiator
(5)
160°F (71°C)
180°F (82°C)
140°F (60°C)
Baseboard
(6)
Decreasing OutdoorTemperature
Increasing Water Temperature
BOIL INDR
N
o
r
m
a
l
D
e
s
i
g
n
ROOM
A
c
t
u
a
l
T
e
m
p
.
Decreasing Outdoor Temperature
Increasing Water Temperature
cold
BOIL INDR
BOIL DSGN
warm
OUTDR
DSGN
Copyright © D 260 - 03/097 of 20
Fancoil (3)
A fancoil terminal unit or air handling unit (AHU) consists of a hydronic heating coil and
either a fan or blower. Air is forced across the coil at a constant velocity by the fan or
blower, and is then delivered into the building space.
Default values: BOIL DSGN = 190°F (88°C), BOIL MAX = 210°F (99°C),
BOIL MIN = 140°F (60°C)
Fin–tube Convector (4)
A convector terminal unit is made up of a heating element with fins on it. This type of
terminal unit relies on the natural convection of air across the heating element to deliver
heated air into the space. The amount of natural convection to the space is dependant
on the supply water temperature to the heating element and the room air temperature.
Default values: BOIL DSGN = 180°F (82°C), BOIL MAX = 200°F (93°C),
BOIL MIN = 140°F (60°C)
Radiator (5)
A radiator terminal unit has a large heated surface that is exposed to the room. A radia-
tor provides heat to the room through radiant heat transfer and natural convection.
Default values: BOIL DSGN = 160°F (71°C), BOIL MAX = 180°F (82°C),
BOIL MIN = 140°F (60°C)
Baseboard (6)
A baseboard terminal unit is similar to a radiator, but has a low profile and is installed at
the base of the wall. The proportion of heat transferred by radiation from a baseboard is
greater than that from a fin-tube convector.
Default values: BOIL DSGN = 150°F (66°C), BOIL MAX = 170°F (77°C),
BOIL MIN = 140°F (60°C)
Section B3: Advanced
BOILER INDOOR (BOIL INDR)
The BOIL INDR is the room temperature used in the original heat loss calculations for the building. This setting establishes the beginning
of the
Characterized Heating Curve
for the boiler zones.
BOILER DESIGN (BOIL DSGN)
The BOIL DSGN temperature is the supply water temperature required to heat the boiler zones when the outdoor air temperature is
as cold as the OUTDR DSGN setting.
BOILER MAXIMUM (BOIL MAX)
The BOIL MAX is the highest water temperature that the control is al-
lowed to calculate as the BOIL TARGET temperature. If the control does
target the BOIL MAX setting, and the BOIL temperature is near the BOIL
MAX temperature, the MAX segment will be displayed in the LCD while
either the BOIL TARGET temperature or the BOIL temperature is being
viewed. At no time does the control operate the boiler above 248°F
(120°C).
BOILER MINIMUM (BOIL MIN)
The BOIL MIN is the lowest water temperature that the control is allowed
to use as the BOIL TARGET temperature. During mild conditions, if the
260 calculates a BOIL TARGET temperature that is below the BOIL
MIN setting, the BOIL TARGET temperature is adjusted to at least the
BOIL MIN setting. During this condition, if the boiler is operating, the
MIN segment turns on in the LCD while the BOIL TARGET or BOIL
temperature is being viewed. If the installed boiler is designed for low
temperature operation, set the BOIL MIN adjustment to OFF.
70
(21)
90
(32)
110
(43)
130
(54)
150
(66)
170
(77)
190
(88)
Outdoor Air Temperature
Supply Water Temperature
210°F
(99°C)
-20
(-29)
0
(-18)
20
(-7)
40
(5)
60
(16)
80°F
(27°C)
BOIL MIN
Boiler Characterized
Heating Curve
50
(10)
WWSD OCC
ROOM OCC
BOIL DSGN
WWSD UNOCC
BOIL INDR
OUTDR DSGN
ROOM UNOCC
BOIL MAX
Copyright © D 260 - 03/09 8 of 20
FIRE DELAY (FIRE DELAY)
The Fire Delay is the delay time that occurs between the time that the 260 closes the
Boiler
contact and the burner fires. This delay is
usually the result of burner pre-purge, or other forms of time delay built into the burner’s safety circuits.
BOILER DIFFERENTIAL (BOIL DIFF)
An on / off heat source such as a boiler, must be operated with a differential in order to prevent short cycling. With the 260, either a
fixed or an auto differential may be selected.
Fixed Differential
The boiler differential is divided around the BOIL TARGET temperature.
The contact will close when the supply water temperature is 1/2 of
the differential setting below the BOIL TARGET temperature, and will
open when the supply water temperature is 1/2 of the differential setting
above the BOIL TARGET temperature.
Auto Differential (Ad)
If the Auto Differential is selected, the 260 automatically determines
the best differential as the load changes. This setting is recommended
as it reduces potential short cycling during light loads.
WARM WEATHER SHUT DOWN (WWSD) OCC & UNOCC
When the outdoor air temperature rises above the WWSD setting, the 260 turns on the WWSD segment in the display. When the
control is in Warm Weather Shut Down, the
Boiler Demand
pointer is displayed, if there is a demand. However, the control does not
operate the heating system to satisfy this demand. The control does respond to a DHW demand and operates as described in
section C.
Section C: Domestic Hot Water (DHW)
Section C1
General Domestic
Hot Water (DHW)
Operation
Section C2
DHW Priority
Section C3
DHW with Low
Temperature
Boiler
Section C1: General Domestic Hot Water (DHW) Operation
DHW DEMAND
A DHW demand is required in order for the 260 to provide heat to the DHW system. The
260 registers a DHW demand when a voltage between 24 and 240 V (ac) is applied
across the
DHW Demand
terminals (3 and 4). A DHW aquastat or setpoint control is used
as a switch in the DHW demand circuit. Once the 260 detects a DHW demand, the
DHW
Demand
pointer turns on in the LCD and the control operates as described below.
DHW DEVICE
Once the 260 receives a DHW demand, the sequence of operation depends on the type of
DHW device selected. The DHW device is selected using the
DHW Valve / DHW Pump
DIP switch.
Supply Water Temperature
Time
Differential = 10°F (5°C)
165°F(74°C)
B
o
i
l
e
r
o
f
f
B
o
i
le
r
o
n
155°F (68°C)
160°F (71°C)
B
o
i
l
e
r
o
f
f
B
o
i
l
e
r
o
n
3
4
DHW
Demand
24 to 240 V (ac)
Aquastat
Off
On
Time
Heating Load
Differential
Copyright © D 260 - 03/099 of 20
DHW Pump (
DIP switch
= DHW Pump)
If
DHW Pump
is selected, the 260 assumes that the DHW pump provides adequate flow
through both the DHW tank heat exchanger, and the boiler. To provide heat to the DHW
tank, the 260 closes the
DHW Pmp / Vlv
contact (9 and 10) and operates the boiler to
provide a sufficient boiler supply temperature to the DHW tank. If using a primary loop
with the DHW tank piped in primary / secondary, set the DIP switch to
DHW Valve
.
DHW Valve (
DIP switch
= DHW Valve)
If
DHW Valve
is selected and there is a DHW demand, the 260 closes the
DHW Pmp /
Vlv
contact (9 and 10) and the
Boil P1
contact (7). The boiler pump provides flow through
the DHW’s heat exchanger once the DHW valve is opened. The 260 operates the boiler
to provide a sufficient boiler supply temperature to the DHW tank.
BOILER TARGET DURING DHW GENERATION (BOIL TARGET)
When the control receives a DHW demand, the BOIL TARGET is at least 180°F (82°C).
DHW DURING UNOCCUPIED
If a DHW demand is received during an unoccupied (Night) period, the control can either continue operation of the DHW system as it
would during the occupied (Day) period, or the control can ignore a call for DHW as long as the control is in an unoccupied (Night)
mode. This option is selected using the
DHW during UnOcc
DIP switch.
Section C2: DHW Priority
DHW PRIORITY
It is often desirable to limit or even stop the flow of heat to the heating system when the
DHW tank calls for heat. This allows for a faster recovery of the DHW tank. If DHW priority
is selected, the boiler pump (P1) is turned off on a call for DHW. This setting is available
only if DHW pump is selected as the DHW device (DIP switch =
DHW Pump
). If a valve is
used as the DHW device, DHW priority can not be used. Caution should be taken to
ensure that the flow rate of the DHW pump is adequate for both the DHW tank and the
boiler, as this will be the only pump providing flow through the boiler. This feature is selected
using the
DHW Priority / Off
DIP switch.
Note:
If
DHW Priority
is selected with a
DHW Valve
, the control will display an error
message. Refer to the
Error Messages
section at the back of this brochure.
DHW PRIORITY OVERRIDE
To prevent the building from cooling off too much, or the possibility of a potential freeze up
during DHW priority, the 260 limits the amount of time for DHW priority. As the outdoor air
temperature becomes colder, the length of time that the 260 provides DHW priority is
reduced. Once the allowed time for priority has elapsed, the 260 overrides the DHW priority
and operates DHW and heating simultaneously.
CONDITIONAL DHW PRIORITY
If the boiler supply temperature is maintained at or above the required temperature during DHW generation, this indicates that the
boiler has enough capacity for DHW and possibly heating as well. As long as the boiler supply temperature is maintained near its
target, DHW and heating occurs simultaneously.
DHW POST PURGE
After the DHW demand is removed, the 260 performs a purge on the boiler. The 260 shuts off the boiler and continues to operate
either the DHW pump, or the DHW valve and the boiler pump. This purges the residual heat from the boiler into the DHW tank. The
260 continues this purge for a maximum of four minutes or until the boiler supply water temperature drops below 160°F (71°C). The
260 also stops the purge if the boiler supply temperature drops below the current BOIL TARGET temperature.
P
P1
DHW
P
Valve
P
Pump
Outdoor Air Temperature
Increasing Air Temperature
Increasing Time
DHW priority demand time limit
Copyright © D 260 - 03/09 10 of 20
DHW MIXING PURGE
After DHW priority operation, the boiler is extremely hot. At the same time, the heating
zones may have cooled off considerably after being off for a period of time. To avoid
thermally shocking the boiler after DHW priority, the 260 shuts off the boiler, but continues
to operate the DHW while restarting the heating system. This allows some of the DHW
return water to mix with the cool return water from the zones and temper the boiler
return water.
Section C3: DHW with Low Temperature Boiler
If DHW is to be incorporated into a low temperature system such as a
radiant heating system, a mixing device is often installed to isolate the
high DHW supply temperature from the lower system temperature. If a
mixing device is not installed, high temperature water could be supplied
to the low temperature system while trying to satisfy the DHW demand.
This may result in damage to the low temperature heating system. The
260 is capable of providing DHW in such a system while ensuring that
the low temperature in the heating system does not exceed its allowed
maximum setting.
To prevent high temperature water from being introduced into the heating system, the boiler pump P1 must be turned off during a call
for DHW. To do this, the DHW device must be a DHW pump (DIP switch =
DHW Pump
), DHW priority must be selected (DIP switch =
DHW Priority
), and BOIL MIN must be set to OFF.
On a call for DHW, the 260 provides DHW priority by shutting off the boiler pump (P1) for a period of time. This time is based on the
outdoor air temperature as described in the DHW PRIORITY OVERRIDE section. However, if the DHW demand is not satisfied within
the allotted time, the boiler shuts off and the heat of the boiler is purged into the DHW tank.
Once the boiler supply temperature is sufficiently reduced, the DHW pump shuts off. The heating system is turned on for a period of
time to prevent the building from cooling off. After a period of heating, if the DHW demand is still present, the 260 shuts off the heating
system and provides heat to the DHW tank once again.
For correct operation, close attention must be paid to the mechanical layout of the system. When the 260 turns off the boiler pump
(P1), flow to the heating system must stop. If flow is not stopped, the temperature in the heating system can exceed the maximum
desired temperature, and can result in damage to the heating system.
Installation
CAUTION
Improper installation and operation of this control could result in damage to the equipment and possibly even personal injury. It is
your responsibility to ensure that this control is safely installed according to all applicable codes and standards. This electronic
control is not intended for use as a primary limit control. Other controls that are intended and certified as safety limits must be placed
into the control circuit.
STEP ONE
GETTING READY
Check the contents of this package. If any of the contents listed are missing or damaged, please contact your wholesaler or tekmar
sales representative for assistance.
Type 260 includes: One Boiler Control 260, One Outdoor Sensor 070, One Universal Sensor 082, Data Brochures D 260,
D 070, D 001, Application Brochure A 260
Note:
Carefully read the details of the
Sequence of Operation
to ensure that you have chosen the proper control for your application.
STEP TWO
MOUNTING THE BASE
Remove the control from its base by pressing down on the release clip in the wiring chamber, and sliding the control away from it. The
base is then mounted in accordance with the instructions in the Data Brochure D 001.
P
P
P1
DHW
Copyright © D 260 - 03/0911 of 20
STEP THREE
ROUGH-IN WIRING
All electrical wiring terminates in the control base wiring chamber. The base has standard 7/8” (22 mm) knockouts which accept
common wiring hardware and conduit fittings. Before removing the knockouts, check the wiring diagram and select those sections of
the chamber with common voltages. Do not allow the wiring to cross between sections, as the wires will interfere with safety dividers
which should be installed at a later time.
Power must not be applied to any of the wires during the rough-in wiring stage.
• Install the Outdoor Sensor 070 and Boiler Sensor 082 according to the instructions in the Data Brochure D 070, and run the wiring
back to the control.
• If an Indoor Sensor 076 or 077 is used, install the indoor sensor according to the instructions in the Data Brochure D 074, and run
the wiring back to the control.
• Run wire from other system components (pumps, valve, boiler, etc.) to the control.
• Run wires from the 120 V (ac) power to the control. Use a clean power source to ensure proper operation. Multi-strand 16 AWG
wire is recommended for all 120 V (ac) wiring due to its superior flexibility and ease of installation into the terminals.
STEP FOUR
ELECTRICAL CONNECTIONS TO THE CONTROL
The installer should test to confirm that no voltage is present at any of the wires. Push the control into the base and slide it down until
it snaps firmly into place.
Powered Input Connections
120 V (ac) Power
Connect the 120 V (ac) power supply to the
Power L
and
Power N
terminals (5 and 6).
This connection provides power to the microprocessor and display of the control. As
well, this connection provides power to the
Boil P1
terminal (7) from the
Power L
terminal (5).
Boiler Demand
To generate a boiler demand, a voltage between 24 V (ac) and 240 V (ac) must be
applied across the
Boiler Demand
terminals (1 and 2).
DHW Demand
To generate a DHW demand, a voltage between 24 V (ac) and 240 V (ac) must be
applied across the
DHW Demand
terminals (3 and 4).
Output Connections
Boiler Pump Contact (
Boil P1
)
The boiler pump output terminal (7) on the 260 is a powered output.
When the relay contact in the 260 closes, 120 V (ac) Line (L) is
provided to the
Boil P1
terminal (7) from the
Power L
terminal (5).
To operate the boiler pump, connect one side of the boiler pump
circuit to terminal 7, and the second side of the pump circuit to the
neutral (
N
) terminal 8.
3
4
DHW
Demand
24 to 240 V (ac)
1
2
Boiler
Demand
24 to 240 V (ac)
5
6
120 V (ac)
L
N
Power
5
6
Power
Boil
P1
7
8
120 V (ac)
L
N
L
N
N
Boiler
pump
Copyright © D 260 - 03/09 12 of 20
DHW Pump / Valve Contact
The
DHW Pmp / Vlv
terminals (9 and 10) are an isolated output in the 260. There is no
power available on these terminals from the control. These terminals are to be used
as a switch to either make or break power to the DHW pump or DHW valve. Since this
is an isolated contact, it may switch a voltage between 24 V (ac) and 240 V (ac).
Boiler Contact
The
Boiler
terminals (11 and 12) are an isolated output in the 260. There is no power
available on these terminals from the control. These terminals are to be used as a
switch to either make or break the boiler circuit. When the 260 requires the boiler to
fire, it closes the contact between terminals 11 and 12.
Sensor and Unpowered Input Connections
Do not apply power to these terminals as this will damage the
control.
Outdoor Sensor
Connect the two wires from the Outdoor Sensor 070 to the
Com
and
Out
terminals (14 and 16). The outdoor sensor is used by the
260 to measure the outdoor air temperature.
Boiler Sensor
Connect the two wires from the Boiler Sensor 082 to the
Com
and
Boil
terminals (14 and 15). The boiler sensor is used by the 260 to
measure the supply (outlet) water temperature from the boiler.
Indoor Sensor
If an indoor sensor is used, connect the two wires from the sensor
to the
Com
and
Indr
terminals (17 and 18). The indoor sensor is
used by the 260 to measure the room air temperature.
Unoccupied Switch
If an external timer (tekmar Timer 032) or switch is used, connect the two wires from
the external switch to the
UnO Sw
and
Com
terminals (13 and 14). When these two
terminals are shorted together, the control registers an unoccupied signal.
STEP FIVE
TESTING THE WIRING
Each terminal block
must be unplugged
from its header on the control before power is applied for testing. To remove a terminal
block, pull it straight down from the control.
The following tests are to be performed using standard testing practices and procedures, and should only be carried out by properly
trained and experienced persons.
A good quality electrical test meter, capable of reading from at least 0 - 300 V (ac) and at least 0 - 2,000,000 Ohms, is essential to
properly test the wiring and sensors.
9
10
DHW
Pmp/Vlv
24 to 240 V (ac)
M
or
11
12
T
T
T
T
Boiler
14
15
16
Com
Boil
Out
17
18
Com
Indr
Boiler
sensor
14
15
Com
Boil
13
14
Timer Switch
UnO
Sw
Com
Copyright © D 260 - 03/0913 of 20
Test The Sensors
In order to test the sensors, the actual temperature at each sensor
location must be measured. A good quality digital thermometer with a
surface temperature probe is recommended for ease of use and
accuracy. Where a digital thermometer is not available, a spare sensor
can be strapped alongside the one to be tested, and the readings
compared. Test the sensors according to the instructions in the Data
Brochure D 070.
Test The Power Supply
Make sure exposed wires and bare terminals are not in contact with
other wires or grounded surfaces. Turn on the power and measure
the voltage between the
Power L
and
Power N
terminals (5 and 6)
using an AC voltmeter. The reading should be between 108 and 132
V (ac).
Test The Powered Inputs
Boiler Demand
Measure the voltage between the
Boiler Demand
terminals (1 and
2). When the boiler demand device calls for heat, you should
measure between 20 and 260 V (ac) at the terminals. When the
boiler demand device is off, you should measure less than 5 V (ac).
DHW Demand
If a DHW demand is used, measure the voltage between the
DHW
Demand
terminals (3 and 4). When the DHW demand device calls
for heat, you should measure between 20 and 260 V (ac) at the
terminals. When the DHW demand device is off, you should measure
less than 5 V (ac).
Test The Outputs
Boiler Pump (
Boil P1
)
If the boiler pump is connected to the
Boil P1
terminal (7) and
N
terminal (8), make sure power to the terminal block is off, and install
a jumper between the
Power L
and the
Boil P1
terminals (5 and 7).
Install a second jumper between
Power N
and
N
terminals (6 and
8). When power is applied to the
Power L
and
Power N
terminals (5
and 6), the boiler pump should start. If the pump does not turn on,
check the wiring between terminal block and pump, and refer to
any installation or troubleshooting information supplied with the
pump. If the pump operates properly, disconnect the power and
remove the jumpers.
DHW Pump or Valve (
DHW Pmp / Vlv
)
If a DHW pump or DHW valve is connected to the
DHW Pmp / Vlv
terminals (9 and
10), make sure power to the pump or valve circuit is off and install a jumper between
those terminals. When the DHW circuit is powered up, the DHW pump should turn on
or the DHW valve should open completely. If the DHW pump or valve fails to operate,
check the wiring between the terminals and the pump or valve, and refer to any
installation or troubleshooting information supplied with these devices. If the DHW
pump or valve operates properly, disconnect the power and remove the jumper.
Ω
V
V
5
6
L
N
Power
108 to 132 V (ac)
Ω
V
V
1
2
Boiler
Demand
20 to 260 V (ac)
Ω
V
V
3
4
DHW
Demand
20 to 260 V (ac)
9
10
DHW
Pmp/Vlv
24 to 240 V (ac)
M
or
120 V (ac)
N
L
L
N
5
6
Power
Boil
P1
7
8
N
Boiler
pump
Ω
V
14
15
Com
Boil
Ω
Copyright © D 260 - 03/09 14 of 20
Boiler
If the boiler circuit is connected to the
Boiler
terminals (11 and 12), make sure power to the boiler circuit is off and install a jumper
between the terminals. When the boiler circuit is powered up, the boiler should fire. If the boiler does not turn on, refer to any
installation or troubleshooting information supplied with the boiler. (The boiler may have a flow switch that prevents firing until the
boiler pump (P1) is running). If the boiler operates properly, disconnect the power and remove the jumper.
Connecting The Control
Make sure all power to the devices and terminal blocks is off, and remove any
remaining jumpers from the terminals.
Reconnect the terminal blocks to the control by carefully aligning them with their
respective headers on the control, and then pushing the terminal blocks into the headers.
The terminal blocks should snap firmly into place.
Install the supplied safety dividers between the unpowered sensor inputs, and the
powered or 24 V (ac) wiring chambers.
Apply power to the control. The operation of the control on power up is described in the
Sequence of Operation
section of this brochure.
DIP Switch Settings
The DIP Switch settings on the control are very important and should be
set to the appropriate settings prior to making any adjustments to the
control through the user interface. The DIP switch settings change the
items that are available to be viewed and / or adjusted in the user
interface.
ADVANCED / INSTALLER
The
Advanced / Installer
DIP switch is used to select which items are available to be viewed and / or adjusted in the user interface.
DHW VALVE / DHW PUMP
The
DHW Valve / DHW Pump
DIP switch is used to select the type of device that is being used to control the flow of heat to the DHW
tank.
Note:
If the DHW tank is piped in primary / secondary,
DHW Valve
must be selected. Refer to section C1.
DHW PRIORITY / OFF
The
DHW Priority / Off
DIP switch is used to select DHW priority. If the DIP switch is set to
DHW Priority
, refer to section C2.
DHW DURING UNOCC / OFF
The
DHW during UnOcc / Off
DIP switch is used to select whether or not DHW will be generated during the unoccupied (Night) period.
If
DHW during UnOcc
is selected, DHW operates normally. If
Off
is selected, a call for DHW during the unoccupied (Night) period is
ignored.
Quick Setup
To enter the installer programming mode, set the
Advanced / Installer
DIP switch to
Installer
.
Access the ADJUST menu by pressing and holding simultaneously for 1 second, the
Item
,
and
buttons. The display will now show
the word ADJUST in the top right corner.
The ROOM OCC adjustment is the first item displayed. Use the or button to set the ROOM temperature.
The ROOM OCC setting is set to the desired room air temperature during the occupied (Day) mode.
Note:
To increase or decrease space temperature during the occupied (Day) mode, only adjust the ROOM
OCC setting.
Off
Installer
Advanced
DHW during UnOcc
DHW Pump
Off
DHW Priority
DHW Valve
ROOM
°
F
OCC
ADJUST
13
14
16
15
UnO
Sw
Com
Boil
Out
Copyright © D 260 - 03/0915 of 20
Press and release the
Item
button to advance to the ROOM UNOCC adjustment. Use the or button to
set the desired temperature. The ROOM UNOCC setting is set to the desired room air temperature during
the unoccupied (Night) mode.
Note:
To increase or decrease space temperature during the unoccupied (Night) mode, only adjust the
ROOM UNOCC setting.
Press and release the
Item
button to advance to the OUTDR DSGN adjustment. Use the
or button to
set the outdoor design temperature. The OUTDR DSGN setting is set to the typical coldest temperature of
the year.
Press and release the
Item
button to advance to the
Terminal Unit
adjustment. Use the
or button to select
the desired terminal unit. The terminal unit number corresponds to the type of terminal that is being used.
The table below lists the terminal units and their default values.
Press and release the
Item
button to advance to the units adjustment. Use the
or button to set the scale
to °F or °C.
To exit the ADJUST menu, press and release the
Item
button to advance to the ESC item. Then either press
the or button, or leave the buttons alone for 20 seconds.
View Menu (1 of 1)
Current outdoor air temperature as measured by the outdoor
sensor. This is also the default display for the control.
-67 to 149°F
(-55 to 65°C)
Current room air temperature as measured by the indoor sensor.
(Indoor sensor is present)
23 to 113°F
(-5 to 45°C)
Current boiler supply water temperature as measured by the
boiler sensor.
14 to 266F
(-10 to 130°C)
Target boiler supply is the temperature the control is currently
trying to maintain at the boiler sensor.
---, 14 to 266°F
(---, -10 to 130°C)
B1
B3
C1
C2
Section
Installer
Display Description Range
B1
B3
ROOM
°
F
OCC
UN
ADJUST
°
F
ADJUST
Advanced
ADJUST
ADJUST
DSGN
OUTDR
°
F
Terminal Unit
ADJUST
VIEW
OUTDR
°
F
OCC
VIEW
ROOM
°
F
OCC
VIEW
BOIL
°
F
OCC
VIEW
TARGET
BOIL
°
F
OCC
150°F (66°C)
170°F (77°C)
140°F (60°C)
BOIL DSGN
BOIL MAX
BOIL MIN
Terminal Unit
190°F (88°C)
210°F (99°C)
140°F(60°C)
High Mass Radiant
(1)
120°F (49°C)
140°F (60°C)
OFF
Low Mass Radiant
(2)
Fancoil
(3)
140°F (60°C)
160°F (71°C)
OFF
Fin-tube Convector
(4)
180°F (82°C)
200°F (93°C)
140°F (60°C)
Radiator
(5)
160°F (71°C)
180°F (82°C)
140°F (60°C)
Baseboard
(6)
Copyright © D 260 - 03/09 16 of 20
Adjust Menu (1 of 2)
The desired room air temperature during an
occupied (Day) period.
35 to 100°F
(2 to 38°C)
The desired room air temperature during an
unoccupied (Night) period.
35 to 100°F
(2 to 38°C)
The design outdoor air temperature used in the
heat loss calculation for the heating system.
-60 to 32°F
(-51 to 0°C)
The design indoor air temperature used in the heat
loss calculation for the heating system.
35 to 100°F
(2 to 38°C)
B3
The design supply water temperature used in the
heat loss calculation for the heating system.
70 to 220°F
(21 to 104°C)
B3
The maximum boiler target supply water
temperature.
120 to 225°F
(49 to 107°C)
B3
The type of terminal units that are being used in the
heating system.
B2
The minimum temperature allowed for the boiler
target temperature.
OFF, 80 to 180°F
(OFF, 27 to 82°C)
B3
The system’s warm weather shut down during the
occupied (Day) period.
35 to 100°F, OFF
(2 to 38°C, OFF)
B3
The time delay the control can expect between the
time the boiler contact closes, and the burner fires.
0:00 to 3:00 min
(1 sec. increments)
B3
The differential that the control is to use when it is
operating the boiler.
Ad, 2 to 42°F
(Ad, -17 to 6°C)
B3
B2
B2
B2
1 (High Mass Radi-
ant), 2 (Low Mass
Radiant), 3 (Fancoil),
4 (Fin-tube Convec-
tor), 5 (Radiator),
6 (Baseboard)
Section
Advanced
Installer
Display Description Range
Actual
Setting
ADJUST
DIFF
BOIL
ADJUST
WWSD
°
F
OCC
ROOM
°
F
OCC
ADJUST
ROOM
°
F
OCC
UN
ADJUST
ADJUST
DSGN
OUTDR
°
F
ADJUST
INDR
BOIL
°
F
ADJUST
BOIL
°
F
MAX
ADJUST
BOIL
°
F
MIN
Fire Delay
ADJUST
min
Terminal Unit
ADJUST
ADJUST
DSGN
BOIL
°
F
Copyright © D 260 - 03/0917 of 20
Testing the Control
The Boiler Control 260 has a built-in test routine which is used to test
the main control functions. The 260 continually monitors the sensors,
and displays an error message whenever a fault is found. See the
following pages for a list of the 260’s error messages and possible
causes. When the
Test
button is pressed, the test light is turned on.
The individual outputs and relays are tested in the following test
sequence.
TEST SEQUENCE
Each step in the test sequence lasts 10 seconds.
During the test routine, the test sequence is paused by pressing the
Test
button. Only if there is a boiler demand can the control be
paused in a step. If the
Test
button is not pressed again for 5 minutes while the test sequence is paused, the control exits the entire
test routine. If the test sequence is paused, the
Test
button can be pressed again to advance to the next step. This can also be used
to rapidly advance through the test sequence. To reach the desired step, repeatedly press and release the
Test
button until the
appropriate device and segment in the display turn on.
Step 1
- The boiler pump (
Boil P1
) is turned on for 10 seconds.
Step 2
- The
Boiler
contact is turned on for 10 seconds. After 10 seconds, the
Boiler
and
Boil P1
contacts are shut off.
Step 3
- If a DHW pump is selected as the DHW device, the
DHW Pmp / Vlv
contact is turned on for 10 seconds and is then shut
off.
- If a DHW valve is selected as the DHW device, the
DHW Pmp / Vlv
and
Boil P1
contacts are turned on for 10 seconds and
then shut off.
Note
: This step can only be paused if a DHW demand is present.
Step 4
- After the test sequence is completed, the control resumes its normal operation.
Adjust Menu (2 of 2)
Section
Advanced
Installer
Display Description Range
Actual
Setting
The system’s warm weather shut down during the
unoccupied (Night) period.
35 to 100°F, OFF
(2 to 38°C, OFF)
B3
The units of measurement that all of the
temperatures are to be displayed in the control.
°F, °C
This item exits the ADJUST menu by pressing
either the or button.
ADJUST
WWSD
°
F
OCC
UN
Test
not testing
testing
testing paused
off
red
red
ADJUST
°
F
ADJUST
Copyright © D 260 - 03/09 18 of 20
Troubleshooting
When troubleshooting any heating system, it is always a good idea to establish a set routine to follow. By following a consistent routine,
many hours of potential headaches can be avoided. Below is an example of a sequence that can be used when diagnosing or
troubleshooting problems in a hydronic heating system.
Establish the problem. Get as much information from the customer as possible about the problem. Is there
too much heat, not enough heat, or no heat? Is the problem only in one particular zone or area of the building,
or does the problem affect the entire system? Is this a consistent problem or only intermittent? How long
has the problem existed for? This information is critical in correctly diagnosing the problem.
Understand the sequence of operation of the system. If a particular zone is not receiving enough heat, which
pumps or valves in the system must operate in order to deliver heat to the affected zone? If the zone is
receiving too much heat, which pumps, valves, or check valves must operate in order to stop the delivery
of heat?
Press the
Test
button on the control and follow the control through the test sequence as described in the
Testing section. Pause the control as necessary to ensure that the correct device is operating as it should.
Sketch the piping of the system. This is a relatively simple step that tends to be overlooked, however, it can
often save hours of time in troubleshooting a system. Note flow directions in the system paying close
attention to the location of pumps, check valves, pressure bypass valves, and mixing valves. Ensure correct
flow direction on all pumps. This is also a very useful step if additional assistance is required.
Document the control for future reference. Before making any adjustments to the control, note down all of
the items that the control is currently displaying. This includes items such as error messages, current
temperatures and settings, and which devices should be operating as indicated by the LCD. This information
is an essential step if additional assistance is required to diagnose the problem.
Isolate the problem between the control and the system. Now that the sequence of operation is known
and the system is sketched, is the control operating the proper pumps and valves at the correct times? Is
the control receiving the correct signals from the system as to when it should be operating? Are the proper
items selected in the menus of the control for the device that is to be operated?
Test the contacts, voltages and sensors. Using a multimeter, ensure that the control is receiving adequate
voltage to the power terminals and the demand terminals as noted in the technical data. Use the multimeter
to determine if the internal contacts on the control are opening and closing correctly. Follow the instructions
in the Testing the Wiring section to simulate closed contacts on the terminal blocks as required. Test the
sensors and their wiring as described in the sensor Data Brochures.
Establish the
Problem
Understand the
Sequence of
Operation
Use the Test
Routine
Sketch the
Piping in the
System
Document the
Control
Isolate the
Problem
Test the Contacts
Voltages &
Sensors
Copyright © D 260 - 03/0919 of 20
Error Messages
The control was unable to read a piece of information from its EEPROM. This error can be caused by a
noisy power source. The control will load the factory defaults and stop operation until all the settings are
verified.
This error is caused by an illegal DHW DIP switch setting. When
DHW Priority
and
DHW Valve
are selected
in the DIP switch settings, the control will flash the error message. In this case, the control will operate as
if the
DHW Priority / Off
DIP switch is set to
Off
. To clear the error message from the control, set the
DHW
Priority / Off
DIP switch to
Off
and press the
Item
button.
The control is no longer able to read the outdoor sensor due to a short circuit. In this case the control
assumes an outdoor temperature of 32°F (0°C) and continues operation. Locate and repair the problem as
described in the Data Brochure D 070. To clear the error message from the control after the sensor has
been repaired, press the
Item
button.
The control is no longer able to read the outdoor sensor due to an open circuit. In this case the control
assumes an outdoor temperature of 32°F (0°C) and continues operation. Locate and repair the problem as
described in the Data Brochure D 070. To clear the error message from the control after the sensor has
been repaired, press the
Item
button.
The control is no longer able to read the boiler sensor due to a short circuit. In this case the control does not
operate the
Boiler
contact. Locate and repair the problem as described in the Data Brochure D 070. To
clear the error message from the control after the sensor has been repaired, press the
Item
button.
The control is no longer able to read the boiler sensor due to an open circuit. In this case the control does
not operate the
Boiler
contact. Locate and repair the problem as described in the Data Brochure D 070. To
clear the error message from the control after the sensor has been repaired, press the
Item
button.
The control is no longer able to read the indoor sensor due to a short circuit. The control will continue to
operate as if there was nothing connected to the indoor sensor input. Locate and repair the problem as
described in the Data Brochure D 074. To clear the error message from the control after the sensor has
been repaired, press the
Item
button.
The control is no longer able to read the indoor sensor due to an open circuit. The control will continue to
operate as if there was nothing connected to the indoor sensor input. Locate and repair the problem as
described in the Data Brochure D 074. If the indoor sensor was deliberately removed, the control must be
powered down, and then powered back up. To clear the error message from the control after the sensor
has been repaired, press the
Item
button.
VIEW
ROOM
VIEW
ROOM
VIEW
BOIL
VIEW
BOIL
VIEW
OUTDR
VIEW
OUTDR
VIEW
VIEW
Limited Warranty The liability of tekmar Control Systems Ltd. and tekmar
Control Systems, Inc. (“tekmar”) under this warranty is limited. The purchaser,
by taking receipt of the tekmar product (“product”), acknowledges receipt of
the terms of the warranty and acknowledges that it has read and
understands same.
tekmar warrants each tekmar product against defects in workmanship and materi-
als, if the product is installed and used in compliance with tekmar's instructions. The
warranty period is for a period of twenty-four (24) months from the production date
if the product is not installed during that period, or twelve (12) months from the
documented date of installation if installed within twenty-four (24) months from the
production date.
The liability of tekmar under this warranty shall be limited to, at tekmar's sole dis-
cretion: the cost of parts and labor provided by tekmar to repair defects in materials
and/or workmanship of the defective product; or to the exchange of the defective
product for a replacement product; or to the granting of credit limited to the original
cost of the defective product, and such repair, exchange or credit shall be the sole
remedy available from tekmar, and, without limiting the foregoing in any way,
tekmar is not responsible, in contract, tort or strict product liability, for any
other losses, costs, expenses, inconveniences, or damages, whether direct, indi-
rect, special, secondary, incidental or consequential, arising from ownership or use
of the product, or from defects in workmanship or materials, including any liability
for fundamental breach of contract.
This warranty applies only to those products returned to tekmar during the
warranty period. This warranty does not cover the cost of the parts or labor
to remove or transport the defective product, or to reinstall the repaired or
replacement product. Returned products that are not defective are not cov-
ered by this warranty.
This warranty does not apply if the product has been damaged by negligence
by persons other than tekmar, accident, fire, Act of God, abuse or misuse; or
has been damaged by modifications, alterations or attachments made sub-
sequent to purchase which have not been authorized by tekmar; or if the
product was not installed in compliance with tekmar’s instructions and the
local codes and ordinances; or if due to defective installation of the product;
or if the product was not used in compliance with tekmar’s instructions.
This warranty is in lieu of all other warranties, express or implied, which the
Governing Law (being the law of British Columbia) allows parties to contrac-
tually exclude, including, without limitation, warranties of merchantability,
fitness for a particular purpose, durability or description of the product, its
non-infringement of any relevant patents or trademarks, and its compliance
with or non-violation of any applicable environmental, health or safety legis-
lation; the term of any other warranty not hereby contractually excluded is
limited such that it shall not extend beyond twenty-four (24) months from the
production date, to the extent that such limitation is allowed by the Govern-
ing Law.
Product Return Procedure Products that are believed to have defects in work-
manship or materials must be returned, together with a written description of the
defect, to the tekmar representative for that territory. If the address of the repre-
sentative is not known, please request it from tekmar at the telephone number
listed below
.
Control Systems
tekmar Control Systems Ltd., Canada
tekmar Control Systems, Inc., U.S.A.
Head Office: 5100 Silver Star Road
Vernon, B.C. Canada V1B 3K4
Tel. (250) 545-7749 Fax. (250) 545-0650
Web Site: www.tekmarcontrols.com
Limited Warranty and Product Return Procedure
Product design, software and literature are Copyright © 2009 by:
tekmar Control Systems Ltd. and tekmar Control Systems, Inc.
All specifications are subject to change without notice.
Printed in Canada. D 260 - 03/09.
20 of 20
The installer must ensure that this control and its wiring are isolated and/or shielded from strong sources of electromagnetic noise.
Conversely, this Class B digital apparatus complies with Part 15 of the FCC Rules and meets all requirements of the Canadian
Interference-Causing Equipment Regulations. However, if this control does cause harmful interference to radio or television reception,
which is determined by turning the control off and on, the user is encouraged to try to correct the interference by reorienting or relocating
the receiving antenna, relocating the receiver with respect to this control, and/or connecting the control to a different circuit from that
to which the receiver is connected.
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.
Caution The nonmetallic enclosure does not provide grounding between conduit connections. Use grounding type bushings and jumper
wires.
Attention Un boîtier nonmétallique n’assure pas la continuité électrique des conduits. Utiliser des manchons ou des fils de accord
spécialement conçus pour la mise á la terre.
Technical Data
Boiler Control 260
One Stage Boiler & DHW
Literature — D 260, A 260’s, D 001, D 070, E 003.
Control — Microprocessor PID control; This is not a safety (limit) control.
Packaged weight — 3.0 lb. (1340 g), Enclosure A, blue PVC plastic
Dimensions — 6-5/8” H x 7-9/16” W x 2-13/16” D (170 x 193 x 72 mm)
Approvals — CSA C US, CSA 22.2 No 24 and UL 873, meets class B: ICES & FCC Part 15.
Ambient conditions — Indoor use only, 32 to 113°F (0 to 45°C), < 90% RH non-condensing.
Power supply — 120 V ±10%, 50/60 Hz, 1300 VA
Relays — 240 V (ac) 10 A 1/3 hp
Demands — 20 to 260 V (ac) 2 VA
Sensors included — NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
Outdoor Sensor 070 and Universal Sensor 082.
Optional devices — tekmar type #: 032, 076, 077.
C US
H1154D
Made in Canada by
tekmar Control Systems Ltd.
tektra 910-01
Date Code
Meets Class B:
Canadian ICES
FCC Part 15
(ac)
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tekmar 260 Installation guide

tekmar
Brand
tekmar
Model
260
Category
Weather stations
Type
Installation guide
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